A influxdb security update has been released for Debian GNU/Linux 9 LTS to address a bypass authentication issue.

DLA 2501-1: influxdb security update

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Debian LTS Advisory DLA-2501-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Thorsten Alteholz
December 20, 2020   https://wiki.debian.org/LTS
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Package : influxdb
Version : 1.1.1+dfsg1-4+deb9u1
CVE ID : CVE-2019-20933

An issue has been found in influxdb, a scalable datastore for metrics,
events, and real-time analytics.
By using a JWT token with an empty shared secret, one is able to bypass
authentication in services/httpd/handler.go.

For Debian 9 stretch, this problem has been fixed in version
1.1.1+dfsg1-4+deb9u1.

We recommend that you upgrade your influxdb packages.

For the detailed security status of influxdb please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/influxdb

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS